I've closed my eyes while using light weight on the bench during my warm-up...only to open my eyes up and have this idiot at my gym basically hovering about 3 feet above my face, then grabbing for the weights that were in the process of being pressed by ME(it was only 195), and then him yelling at me how dangerous it is to close your eyes because others may think you've passed out....quite a few people started laughing at him, but he was dead serious...I'd say the bench is the only movement where i close my eyes, i tend to watch my form in the mirror if one is ahead of me.